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1. 发明专利

JPH04334677A SUSPENSION DEVICE FOR CRAWLER 失效
公开(公告)号：JPH04334677A
公开(公告)日：1992-11-20
申请号：JP10735691
申请日：1991-05-13
申请人： JAPAN TECH RES & DEV INST , MITSUBISHI HEAVY IND LTD
发明人： NOWADA SEIKICHI , INOUE YUKIO , MORI TOMOAKI , HASHIMOTO KATSUMI
IPC分类号： B60G17/04 , B60G17/015 , B62D55/112 , B62D55/14
摘要： PURPOSE:To suppress the oscillation of a body so as to improve riding comfort in a crawler provided with a hydraulic/pneumatic pressure suspension device by performing the independent suction/discharge of pressure oil to/from the hydraulic cylinders of an active suspension unit according to the oscillation of the body, and also performing the high-low change-over of a variable control valve. CONSTITUTION:When a body is oscillated at the time of travelling on the uneven ground or riding over a protrusion, the respective detection signals of pitch angle speed detected by a gyroscope 12, the vertical acceleration of the body detected by an accelerometer 11, the displacement of a suspension arm detected by a synchronous resolver 29 and cylinder pressure detected by a pressure sensor 60 are transmitted to a controller 13. In the controller 13, the respective detection signals are computed as weight functions and converted into the solenoid switching signals of a control valve 62 for supplying/ discharging oil pressure to/from an active suspension hydraulic cylinder unit E and the switching signal of the high-low damping change-over solenoid valve 68 or the like of a damping valve unit D. The oscillation of the body is thereby suppressed to improve riding comfort.

2. 发明专利

JPH082453A ACTIVE TYPE SUSPENSION FOR CRAWLER VEHICLE 失效
公开(公告)号：JPH082453A
公开(公告)日：1996-01-09
申请号：JP15656794
申请日：1994-06-15
申请人： JAPAN TECH RES & DEV INST , MITSUBISHI HEAVY IND LTD
发明人： NOWADA SEIKICHI , INOUE YUKIO , MORI TOMOAKI , HASHIMOTO KATSUMI
IPC分类号： B62D55/112
摘要： PURPOSE:To independently control oil quantity and an oil pressure of pressure oil fed to each suspension unit so as to excellently secure stability of a vehicle body in high speed travel on a rough ground by arranging a suspension unit having specific constitution in each leg (lower part rotary wheel) in a hydraulic type suspension. CONSTITUTION:A crawler vehicle is provided with a hydraulic type suspension consisting of plural legs 16 (lower part rotary wheels) in a vehicle body 1. In this case, in each of the legs 16, a suspension unit 15, in which a valve block 64 provided with a suspension cylinder 70, a suspension accumulator 48, and varied kinds of control valves is arranged in a U-shape, is arranged. Oil quantity and an oil pressure of pressure oil fed to each suspension unit 15 from an oil pump can be independently controlled in each suspension unit 15. In the valve block 64, a servo-valve 41, a shutoff valve 42, an overload relief valve 43, a high damping valve 46, and a low damping valve 47 are arranged, and these valves are opened/closed by means of a suspension controller so as to control a vehicle height and an attitude of a vehicle body.

3. 发明专利

JPH09202272A HYBRID TYPE SUSPENSION FOR CRAWLER VEHICLE 失效
公开(公告)号：JPH09202272A
公开(公告)日：1997-08-05
申请号：JP1142596
申请日：1996-01-26
申请人： JAPAN TECH RES & DEV INST , MITSUBISHI HEAVY IND LTD
发明人： NOWADA SEIKICHI , INOUE YUKIO , MORI TOMOAKI , KANEKAWA KIICHI , HASHIMOTO KATSUMI
IPC分类号： B60G17/015 , B62D55/116
摘要： PROBLEM TO BE SOLVED: To reduce the impact and shaking so as to increase stability and adjust the height of a traveling car by providing a conventional type suspension unit having an active function and a variable damping function through which hydraulic oil is injected and discharged and an in-arm type suspension unit having only a variable damping function. SOLUTION: Six rolling wheels 16 for moving a car body 1a are provided in each of left and right sides and these six rolling wheels 16 are supported and controlled by independent six loading units over the back and forth directions of the car body. The rolling wheels 16 respectively amounting to two in number back and forth along the back and forth directions of the vehicle constitute a conventional type suspension unit communicated with a hydraulic pump and the two rolling wheels 16 in the center constitute an in-arm type suspension unit not communicated with the hydraulic pump and only for the movement of oil. By using the conventional type and in-arm type suspension units together as the suspension units of the rolling wheels of the vehicle, a fuel consumption rate is small and interference between a bracket turning part and the suspension units is prevented.

4. 发明专利

JPH01293284A SUSPENSION DEVICE FOR CLAWLER VEHICLE 失效
公开(公告)号：JPH01293284A
公开(公告)日：1989-11-27
申请号：JP12136588
申请日：1988-05-18
申请人： JAPAN TECH RES & DEV INST , MITSUBISHI HEAVY IND LTD
发明人： NOWADA SEIKICHI , INOUE YUKIO , KUNIMOTO ETSUO , MIMORI SHIGEMI , KUSUSE TADASHI , HASHIMOTO KATSUMI
IPC分类号： B62D55/112 , B62D55/116
摘要： PURPOSE:To lessen the rolling of a body by feeding a hydraulic fluid into a cylinder when a turning wheel is to come down in response to the roughness of a ground surface and discharging the fluid from the cylinder when the aforesaid wheel is to move upward. CONSTITUTION:A suspension device has a three-way valve 211 for feeding a high pressure fluid from an external hydraulic source 22 to a hydraulic cylinder 6 and discharging the fluid from the cylinder 6. Also, the suspension device is provided with a pressure sensor 25 for detecting the pressure of the hydraulic cylinder 6 and a computer 27 for inputting a signal from a turning angle sensor 26 for measuring the turning angle of a steering arm 2 and outputting the signal to the three-way valve 211. The height of the suspension device is adjusted by the process of the control where the hydraulic fluid is supplied and discharged via the operation of the three-way valve 211 for keeping the hydraulic cylinder pressure of a steering wheel 1 constant on the basis of pressure sensor output as a feedback signal, a height is made constant via the change of the set pressure of the hydraulic fluid on the basis of a steering arm turning angle sensor output as a feedback signal and the hydraulic fluid is supplied and discharged on the basis of the turning angle sensor output for a forward steering arm as a feed-forward signal.

5. 发明专利

JPH11240470A LOAD CONTROL UNIT FOR TRACK-LAYING VEHICLE 失效
公开(公告)号：JPH11240470A
公开(公告)日：1999-09-07
申请号：JP4203498
申请日：1998-02-24
申请人： JAPAN TECH RES & DEV INST , MITSUBISHI HEAVY IND LTD
发明人： INOUE YUKIO , MORI TOMOAKI , OKAZAWA TAKEHIKO , ONOZUKA MICHIO
IPC分类号： B60G17/015 , B62D55/116
摘要： PROBLEM TO BE SOLVED: To prevent the vehicle from changing its body position due to inertial force by comparing a calculated hydraulic pressure with a value of hydraulic pressure detected by pressure detection means and outputting a control signal to a servo valve so as to offset the calculated hydraulic pressure based on the inertial force. SOLUTION: An acceleration detector 20 inputs an acceleration detection signal with respect to acceleration in the longitudinal and lateral directions of the vehicle and a hydraulic detection signal of a hydraulic cylinder 12 from a pressure detector 22 to an input signal portion 25 of an inertial force correction control unit 18, which are then transmitted to a CPU 23. The CPU 23 calculates the load exerted on a support leg for each rotating wheel using the inertial force obtained from the value of the acceleration detection signal of the acceleration detector 20 and the distance from the center of gravity of the vehicle to the center of each rotating wheel. The resultant load is converted into hydraulic pressure. The obtained hydraulic pressure and the detected value of the hydraulic pressure from the pressure detector 22 are compared, and a control signal is output to the servo valve 13 so as to offset the calculated hydraulic pressure based on the inertial force.

6. 发明专利

JPS62151738A VIBRATION TESTING DEVICE FOR RAIL VEHICLE 失效
公开(公告)号：JPS62151738A
公开(公告)日：1987-07-06
申请号：JP29480685
申请日：1985-12-26
申请人： JAPAN TECH RES & DEV INST , MITSUBISHI HEAVY IND LTD
发明人： NOWADA SEIKICHI , INOUE YUKIO , TODA KATSUAKI , FUJISHIMA TAKASHI
IPC分类号： G01M7/02 , G01M7/00 , G01M17/00 , G01M17/03
摘要： PURPOSE:To prevent a vehicle from falling from on a device during excitation and to execute a vibration test while the vehicle is excited to a large amplitude by interposing a slide mechanism between an upper and a lower supporting member. CONSTITUTION:The slide mechanism S is interposed between the lower supporting member 7 fitted to the upper end of the piston rod 2 of an exciting cylinder and the upper supporting member 5 where a cover belt B is mounted. The slide mechanism S consists of plural roller bearings 12, 13a, and 13b interposed between a housing 6 and the member 7 and roller bearings 9a, 9b, and 10 interposed between the housing and member 5 and allows both members 5 and 7 to move up and down, and right and left within a specific range respectively. Further, if both members 5 and 7 move relatively beyond the specific range, a pressure block 11 which is so fixed that four end parts of the member 7 project upward, a pressure block 8 fixed so that the four end parts of the member 5 project downward, and a guide 16 mounted on both side parts of the member 5 serve as the stopper member to restrain said movement.

7. 发明专利

JPH02155815A SEMI-ACTIVE SUSPENSION CONTROL DEVICE OF CATERPILLAR VEHICLE 失效
公开(公告)号：JPH02155815A
公开(公告)日：1990-06-14
申请号：JP30888388
申请日：1988-12-08
申请人： JAPAN TECH RES & DEV INST
发明人： NOWADA SEIKICHI , INOUE YUKIO , ONOZUKA MICHIO
IPC分类号： B60G17/015
摘要： PURPOSE:To reduce influence of error of an acceleration meter in a semi-active suspension control device for a construction machine such as wheel loader by combining a judgement due to speed value using the roll angle speed and pitch angle speed with a judgement due to acceleration value using acceleration in the vertical direction of the car body. CONSTITUTION:To a control circuit 12 a gyrobox 7 emits output digital signals of pitch angle speed, roll angle speed, and vertical acceleration at the center of gravity of the car body given by a gyro- and acceleration meter. Together with the car speed, this control circuit 12 processes the outputs of a rotation pickup 8 and potentiometers 9-11 fitted on accel. pedal, brake pedal, and steering wheel, and emits as output a damping force changeover signal for a solenoid valve 3 mounted on each wheel. In response to this signal, the solenoid valve 3 changes over a damping force changeover valve 2 to control the damping force. This constitution can reduce the influence of mechanical error of the acceleration meter.

8. 发明专利

JPH04100708A VARIABLE CHARACTERISTIC TYPE TRAVELING SUSPENSION CONTROL DEVICE FOR TRACK-VEHICLE 失效
公开(公告)号：JPH04100708A
公开(公告)日：1992-04-02
申请号：JP21613090
申请日：1990-08-16
申请人： JAPAN TECH RES & DEV INST
发明人： NOWADA SEIKICHI , INOUE YUKIO , MORI TOMOAKI
IPC分类号： B60G17/015 , B62D55/112 , B62D55/14
摘要： PURPOSE:To effectively reduce the oscillation of a vehicle in an outside-road uneven ground or in various operations causing the oscillation of the vehicle by controlling damping force and spring force so as to be changed over in the direction the vehicle oscillation decreases via a controller on the basis of the detection output of a vehicle- oscillation detector. CONSTITUTION:The oscillation of a vehicle body 26 (not shown) is detected by a vehicle-oscillation detector 16 having a pitch-rate gyro 13, a roll-rate gyro 14, and an accelerometer 15 as the signals of vehicle-pitch angular velocity, roll angular velocity, and vehicle vertical acceleration, and after amplified by an amplifier 74, these signals are sent to a CPU 61 via a serial I/O 64. In accordance with the control logic stored in a logic circuit 69, the CPU 61 controls the current to a damping-force changeover valve A4 via a damping-force changeover valve driving circuit 66, and selects the optimum out of the damping-force levels of a variable attenuator A3 to reduce the oscillation of the vehicle. In the same way, the CPU 61 controls the current to a spring-force changeover valve A5 via a spring-force changeover valve driving circuit 65, and selects the optimum out of the spring-force levels of a variable spring device A50 to reduce the oscillation of the vehicle.

9. 发明专利

JPS6114539A On-base testing device 失效
标题翻译：基座测试装置
公开(公告)号：JPS6114539A
公开(公告)日：1986-01-22
申请号：JP13632384
申请日：1984-06-30
申请人： Mitsubishi Heavy Ind Ltd , Tech Res & Dev Inst Of Japan Def Agency
发明人： NOWADA SEIKICHI , INOUE YUKIO , KOBAYASHI TOSHIAKI , HASHIMOTO KATSUMI , SHIMADA YOSHIFUMI
IPC分类号： G01M7/04 , G01M17/00 , G01M17/007 , G01M17/03
CPC分类号： G01M7/04 , G01M17/0074
摘要： PURPOSE:To improve the efficiency by embracing upper and lower tracker rollers and guide rollers, arranged on one surface of a vertical rocking beam, with a caterpillar band and thus constituting a beam rocking body, and putting this rocking body in rocking motion and taking a simulation test on a base. CONSTITUTION:The beam rocking body Z is rocked vertically by an excitation device B provided in a pit A, and fitting rack 9 for dummy weights 10a and 10b is fitted to the upper end of a beam 1. Further, a gyro 12 and an accelerograph 13 are installed at the center part of the rack 9 to detect the pitch angle displacement, angular acceleration, vertical acceleration, etc., of the rocking body Z and supply outputs to a signal processing circuit, and then a valve block is operated to bring the rocking body Z under the attitude control of an oil suspending device D. Then, the weight of the beam rocking body Z, excitation input of the excitation device B, gas pressure of an accumulator, etc., are varied variously to take a simulation test similar to a real vehicle.
摘要翻译：目的：通过使上下跟踪辊和引导辊布置在垂直摆动梁的一个表面上，具有履带，从而构成梁摇摆体，提高效率，并将该摇摆体摆放在摇摆运动中基础上的模拟测试构成：通过设置在凹坑A中的激励装置B将梁摇摆体Z竖直地摆动，并且用于假重块10a和10b的装配齿条9装配到梁1的上端。此外，陀螺仪12和加速度计 13安装在齿条9的中心部分，以检测摇摆体Z的俯仰角位移，角加速度，垂直加速度等，并将信号输出给信号处理电路，然后操作阀块摇动体Z在油悬挂装置D的姿态控制下进行。然后，摇摆体Z的重量，励磁装置B的励磁输入，蓄能器的气体压力等被不同地变化以进行模拟测试类似于真正的车辆。

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